circle.center([center]) If center is specified, sets the circle center to the specified point [longitude

circle.precision([angle]) If precision is specified, sets the circle precision to the specified angle in degrees

path.projection([projection]) If a projection is specified, sets the current projection to the specified projection

path.bounds(object) Returns the projected planar bounding box (typically in pixels) for the specified GeoJSON object

projection.stream(stream) Returns a projection stream for

projection.scale([scale]) If scale is specified, sets the projection’s scale factor to the specified value

path.context([context]) If context is specified, sets the current render context and returns the path generator

rotation(point) Returns a new array [longitude, latitude] in degrees representing the rotated point of the

stream.polygonEnd() Indicates the end of a polygon.

path.pointRadius([radius]) If radius is specified, sets the radius used to display Point and MultiPoint features